Parallel Spring Seals
Widely used as the standard upgrade from packing to mechanical seals, parallel spring seals are common place in industry. General applications include but are not limited to Water, Food and Chemical processes. They can be utilised in many pumps, mixers, agitators and compressors.
The majority of Parallel spring designs utilize a rubber diaphragm to seal against the shaft and provide drive to the face. Parallel spring designs that utilize an o-ring to seal against the shaft are driven by the spring.
| Maximum Operating Limits | |
|---|---|
| Pressure | 12 bar (Unbalanced) 13 bar (Balanced) |
| Speed | 15 m/s (Unbalanced) 18 m/s (Balanced) |
| Temperature | -40°C to +200°C |
| Material |
Temperature |
Recommendations |
|---|---|---|
| Ethylene Propylene |
-40°C to +140°C | General applications, especially hot water. Must not come into contact with Oils. |
| Nitrile |
-30°C to +120°C | Standard Material. Suitable for medium duty applications. Not recommended for hot water. |
| Viton® |
-30°C to +230°C |
Suitable for general chemical applications. Not recommended for hot water. |
| Other materials available on request. |
||
| Carbon |
Alumina Ceramic | Silicon Carbide |
|---|---|---|
| Not Available |
Not Available | BBD Type Seals Only |
| Standard Duty |
Not Available |
Not Available |
| Increased Performance |
Not Available | Recommended For Aggressive Media |
| Other materials available on request. | ||
| Carbon |
Alumina Ceramic | Silicon Carbide |
|---|---|---|
| Not Available |
Not Available | BBD Type Seals Only |
| Standard Duty |
Not Available |
Not Available |
| Increased Performance |
Not Available | Recommended For Aggressive Media |
| Other materials available on request. | ||
